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A

$ Value

$604

Shares

1,329

Price

$0

Filed

Mar 31

Insider

Name

MARTIN TAMMY L

Title

General Counsel and Secretary

CIK

0001329293

Roles

Officer

Transaction Details

Transaction Date

2026-03-31

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

13,829

Footnotes

Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,329 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on March 30, 2026.

Filing Info

Accession No.

0001329293-26-000002

Form Type

4

Issuer CIK

0001877939

MARTIN TAMMY L's History

Date Ticker Type Value
2026-03-31 CTM A $604

Other Insiders at CTM (90d)

Insider Bought Sold Last
Ives Glen R
President
$8K 2026-03-27
Merriman Andrew
Chief Operating Officer
$4K 2026-03-31
McMillen Charles Thomas $65K 2026-03-25
Bell David T
Chief Financial Officer
2026-03-31